<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>demo</title>
    <script src="vue.js"></script>
</head>
<body>
    <div id="app">
        <input type="text" v-on:keyup.enter="submitBtn">
        
    </div>
</body>
<script>
    var vm = new Vue({
        el:'#app',
        data:{
        },
        methods:{submitBtn(){
            console.log('点击表单')
        }}
    })
</script>
</html>